Huge uploads not showing as thumbs

[Prank]

Hi All,

I wrote a big topic today for my site and I uploaded a heap of images to it.

Two issues stopped me from publishing though and I had to leave the topic in our moderators chat section;

1. The images are not converted to thumbnails. Whether we insert the images into the post or not. So its just a big long post of images.
2. The images that we do 'insert into post' still appear at the bottom of the post, so we get duplicates.

It's been a while since I've posted anything pic heavy like this but I'm sure this isn't how it used to work ? I did a heap of searches on here and couldn't find anything matching my issue so I'm hoping its just a config issue.

Would appreciate any input. Thanks guys

 

Christian